Question 1

Which statement best describes evolution?

Species have changed over time.

Traits acquired during a lifetime are passed to offspring.

Earth's organisms have not changed over time.

All of Earth's organisms were formed at the same time.

What must happen for speciation to occur? O A. Gene flow must increase. O B. A population must be isolated in some way. O C. All alleles in the population must become fixed. O D. Asexual reproduction must occur.

How much energy dose a sheep get from grass

What event in history led to the the dark-colored peppered moth being better able to survive than the lighter-colored variety? A) The pollution from the Industrial Revolution darkening the trees. B) The lighter-colored moths had a shorter life span.

Look at the dishes in the diagram. Which disinfectant was the most effective at controlling the growth of E. coli?

Besides distance why can't you see across an ocean to land on the other side

What were characteristics of the Roman empire at its height there are more than 1 answer

What is the hawaiian islands formed by one or several of these which bring new rock to the surface of earth?

Adolescents (ages 12-18) experiment with and develop a sense of who they are and what roles they want to play. What is the primary developmental task of this stage?

When did most marine life go extinct?

Phosphorescence is a phenomenon associated with which algal division